The BSUoS charge recovers the cost of day-to-day operation including the cost of balancing the electricity transmission system.
Who does this charge apply to?
Please note that there are exemptions to the below list.
✓ Final Demand Site
✓ Suppliers
✓ Directly connected Transmission demand
✕ Non-Final Demand Site
✕ Generators
✕ Distribution Network Operators
✕ Embedded Generators
✕ Interconnectors
BSUoS Charge
CMP308 and CMP361 came into effect on 1 April 2023, which changed the way BSUoS charges were recovered. CMP308 defined that BSUoS charges are recovered solely from Final Demand and CMP361 introduced an ex-ante fixed BSUoS tariff.
The BSUoS fixed tariffs and BSUoS monthly forecasts are published within the BSUoS data section below.
For more details on how BSUoS is charged, please go to paragraph 14.31 of the Connection and Use of System Code (CUSC).
For pre-April 2023 BSUoS Methodology, please refer to the Introduction to BSUoS - 2019 document.
Introduction to BSUoS
For more general information about the BSUoS charging process, please consult our introduction presentation.
Latest news and updates
2024/25 BSUoS fixed tariffs webinar slides
Published on 10 July 2023
2024/25 BSUoS fixed tariff publication
Published on 30 June 2023
2023/24 BSUoS fixed tariff webinar slides
Published on 8 February 2023
2023/24 BSUoS fixed tariff publication
Published on 31 January 2023
Useful information and documents
2024/25 BSUoS payment calendar - V7
Published on 16 August 2024
BPA_File specs for DAT Format_CMP3087_361
Published on 25 April 2023
Published on 10 February 2022
SFTP connection instructions for retrieving BPA and BCR reports for BSUoS
Step by step instructions on retrieving your BSUoS BPA and BCR
BSUoS data
News
Useful information and documents
Name Sort descending | Published |
---|---|
BSUoS Payment Calendar 24-25 v3 | 13 May 2024 |
BSUoS Payment Calendar 24-25 v4 | 20 May 2024 |
BSUoS Payment Calendar 24-25 v4 | 20 May 2024 |
BSUoS Payment Calendar 24-25 v5 | 10 Jun 2024 |
BSUoS Payment Calendar 24-25 v6 | 1 Jul 2024 |
BSUoS Payment Calendar 24-25 v7 | 16 Aug 2024 |
ESO BSUoS SFTP Connection Instructions | 1 Nov 2023 |
Introduction to BSUoS Charges | 5 Feb 2019 |
SFTP Connection Instructions for Retrieving BPA and BCR Reports for BSUoS | 15 Jun 2018 |
Variable Direct Debit Form | 10 Feb 2022 |
Name Sort descending | Published |
---|---|
BSUoS Fixed Tariff Webinar Slides and Recording - 11th January 2024 | 29 Jan 2024 |
BSUoS Fixed Tariff Webinar Slides and Recording - 5th April 2023 | 13 Apr 2023 |
Draft BSUoS FIxed Tariff 2023-24 | 11 Nov 2022 |
Draft BSUoS Fixed Tariff Webinar - Q and A | 25 Nov 2022 |
Draft BSUoS Fixed Tariff Webinar Slides | 23 Nov 2022 |
Final BSUoS Fixed Tariff 2023-24 | 31 Jan 2023 |
Final BSUoS Fixed Tariff 2023-24 Webinar Slides | 8 Feb 2023 |
BSUoS Monthly Forecast
Here you find the forecast monthly BSUoS costs
Name Sort descending | Published |
---|---|
BSUoS Forecast Explainer April 2021 | 1 Mar 2021 |
BSUoS Forecast Explainer August 2021 | 1 Jul 2021 |
BSUoS Forecast Explainer December - 2020 | 1 Nov 2020 |
BSUoS Forecast Explainer December 2021 | 1 Nov 2021 |
BSUoS Forecast Explainer February 2021 | 1 Jan 2021 |
BSUoS Forecast Explainer January 2021 | 1 Dec 2020 |
BSUoS Forecast Explainer July 2021 | 1 Jun 2021 |
BSUoS Forecast Explainer June 2021 | 1 May 2021 |
BSUoS Forecast Explainer March 2021 | 1 Feb 2021 |
BSUoS Forecast Explainer May 2021 | 1 Apr 2021 |
Current BSUoS data
CMP395 BSUoS Data
CMP381 BSUoS Data
CMP345/350 BSUoS data
Current BCR data
Name Sort descending | Published |
---|---|
2019-08-08 BCRNEW | 8 Aug 2019 |
2019-08-09 BCRNEW | 9 Aug 2019 |
2019-08-12 BCRNEW | 12 Aug 2019 |
2019-08-13 BCRNEW | 13 Aug 2019 |
2019-08-14 BCRNEW | 14 Aug 2019 |
2019-08-15 BCRNEW | 15 Aug 2019 |
2019-08-16 BCRNEW | 16 Aug 2019 |
2019-08-19 BCRNEW | 19 Aug 2019 |
2019-08-20 BCRNEW | 20 Aug 2019 |
2019-08-21 BCRNEW | 21 Aug 2019 |
Historical BSUoS data - II
Historical BSUoS data - SF
Name Sort descending | Published |
---|---|
2010-2011 SF | 14 Apr 2014 |
2011-2012 SF | 15 Apr 2014 |
2012-2013 SF | 16 Apr 2014 |
2013-2014 SF | 18 Jan 2017 |
2014-2015 SF | 20 Jan 2017 |
2015-2016 SF | 21 Jan 2017 |
2016-2017 SF | 4 Jan 2018 |
2017-2018 SF | 3 Sep 2018 |
2018-2019 SF | 24 Jan 2022 |
2019-2020 SF | 24 Jan 2022 |
Historical BSUoS data - RF
Here you will find historic BSUoS data for all Reconciliation Final (RF) data for financial years dating back to 2001.
Name Sort descending | Published |
---|---|
2010-2011 RF | 15 Apr 2014 |
2011-2012 RF | 16 Apr 2014 |
2012-2013 RF | 2 Jun 2017 |
2013-2014 RF | 3 Jun 2017 |
2014-2015 RF | 4 Jun 2017 |
2015-2016 RF | 4 Jan 2018 |
2016-2017 RF | 3 Sep 2018 |
2017-2018 RF | 24 Jan 2022 |
2018-2019 RF | 24 Jan 2022 |
2019-2020 RF | 24 Jan 2022 |
Breakdown of operating margin (OPMR), based on forecast volume of reserve, forecast volume of frequency response required, annual weighting factors for STOR contracts, and forecasts of BSUoS charges.
Contains data and support for users of the National Electricity Transmission System (NETS). Here you will find the latest operational data, forecasts, and reports.
Use the ESO Data Portal to gain access to BSUoS Charges and Balancing Costs related datasets that are geared towards API compatibility, providing additional flexibility to end users.
More from charging
Our charging documentation page is where you can now find all of our charging statements and policy developments along with all the guidance documents and webinars you need if you're new to charging.
Submit a query through our webform, get involved through forums and steering groups, or reach out to the relevant charging team.
Join our mailing list to receive publication updates, invitations to our forums, webinars and workshops, and links to our latest guidance materials.